ams Datasheet

Page 27

[v1-00] 2015-Mar-23

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TMD2672 − Principles of Operation

Control Register (0x0F)

The Control Register provides four bits of control to the analog

block. These bits control the diode drive current and diode

selection functions.

Figure 35:

Control Register

Note(s) and/or Footnote(s):

1. LED STRENGTH values (italic) are nominal operating values. Specifications can be found in the Proximity Characteristics table.

7

6

5

4

32

10

PDRIVE

PDIODE

PGAIN

Reserved

Field

Bits

Description

PDRIVE (1)

7:6

Proximity LED Drive Strength

Field Value

LED STRENGTH - PDL = 0

LED STRENGTH - PDL = 1

00

100mA

11.1mA

01

50mA

5.6mA

10

25mA

2.8mA

11

12.5mA

1.4mA

PDIODE

5:4

Proximity Diode Selector

Field Value

Diode Selection

00

Proximity uses neither diode

01

Proximity uses the CH0 diode

10

Proximity uses the CH1 diode

11

Reserved - Do not write

PGAIN

3:2

Proximity Gain

Field Value

Proximity Gain Value

00

1× gain

01

2× gain

10

4× gain

11

8× gain

Reserved

1:0

Reserved